. >> on the screen, he's got dunkel with police. >> by the time he stepped in front of the camera john dunkel was old. and ready to put on a show. >> this is great. i had an urge to kill he took belmont police on a tour of his crime scene. >> and i killed him and placed his body on top of the mountain. do you want to just walk up the trail? >> he showed him where he stashed a murder weapon and seemed to get emotional, became annoyed by questions. >> what is going through your mind at the time? >> going through it. >> okay. >> belmont 1971 we never had a case close to this magnitude. it had the community locking their doors. disappeared from his home in the middle of the night. 12-year-old lance turner died near daytime soccer practice. 12-year-old sean dinel died in a sacramento park just after dark. police told media but they lackedtofdz make an arrest. their last resort paid off. >> when he moved to sacramento we planted a female detective in the fast food restaurant he was working in. >> she became his drinking buddy, wore a wire ask called for b whupe snuck into a home. e drunkel awaited trial on